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Sindrei [870]
3 years ago
8

How can you tell whether the percent of a number will be greater than, less than, or equal to the number? Give examples to suppo

rt your answer.
Mathematics
1 answer:
Solnce55 [7]3 years ago
7 0
If the percent is more than 100%, it will be greater than the number. Example:
110% of 50 = 55
If the percent is less than 100%, it will be less than the number. Example: 
90% of 50 = 45
If the percent is equal to 100%, it will be equal to the number: Example:
100% of 50 = 50

Hope this helps.
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A study was conducted to determine whether magnets were effective in treating pain. The values represent measurements of pain us
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Answer:

Given:

Sham: n= 20,     x=0.44,   s=1.24,

Magnet:n= 20,  x =0.49,   s= 0.95

For Sham:

Sample size, n = 20

Sample mean = 0.44

Standard deviation = 1.24

For Magnet:

Sample size = 20

Sample mean = 0.49

Standard deviation = 0.95

The null and alternative hypotheses:

H0: s1²=s2²

H1: s1² ≠ s2²

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Magnet: degrees of freedom = n - 1 = 20 - 1 = 19

The critical values:

[Za/2, df1, df2)], [(1 - Za/2), df1, df2]

f[0.05/2, 19, 19], f[(1 - 0.05/2), 19, 19]

f[0.025, 19, 19], f[0.975, 19, 19]

(2.526, 0.3958)

The rejection region:

Reject H0, if  F < 0.3958 or if F > 2.526

c) Conclusion:

Since the critical values of test statistic is between (0.3958 < 1.7037 < 2.526), we fail to reject null hypothesis H0.

There is insufficient evidence to to support the claim that those given a sham treatment have reductions that vary more than those treated with magnets

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